proc.5: Cosmetic changes for VmSwap to keep the layout consistent

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
posix_fadvise.2: Document the behavior of partial page discard requests

It is not obvious from the interface that partial page discard'
requests are ignored. It should be spelled out.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
posix_fadvise.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
memcmp.3: Document return value for n==0 case

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
memcmp.3: Warn against use of memcmp() for comparing security-critical data

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
user_namespaces(7): tfix

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>